<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>让页面弹出不同的用户名</title>
		<script>
			// 在js中如何声明一个变量
			var name = '大周老师';
			alert(name);
			console.log(name);
			var age = 18;
			alert(age);
			console.log(age);
		</script>
	</head>
	<body>
		
	</body>
</html>